Add example for new copydir_run_2to3().
diff --git a/Demo/distutils/test2to3/setup.py b/Demo/distutils/test2to3/setup.py
index deb9a69..a0f9024 100644
--- a/Demo/distutils/test2to3/setup.py
+++ b/Demo/distutils/test2to3/setup.py
@@ -20,7 +20,7 @@
     license = "PSF license",
     packages = ["test2to3"],
     scripts = ["maintest.py"],
-    cmdclass = {'build_py':build_py,
-                'build_scripts':build_scripts,
+    cmdclass = {'build_py': build_py,
+                'build_scripts': build_scripts,
                 }
 )